Xuefeng Lei, Yiwei Ou, Yuehui Wang, Junxian Ma, Qiulian Lin
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引用次数: 0
Abstract
The thermal degradation performance of the polylactic acid (PLA)-based polyurethane resin was investigated by thermogravimetric analysis (TGA), thermogravimetric analysis combined with Fourier transform infrared spectroscopy (TG-FTIR) and thermal cracking gas chromatography/mass spectrometry (PY-GC/MS), while the thermal decomposition mechanism and activation energy were analyzed by different degradation mechanism models. The result demonstrates that the PLA-based polyurethane resin conforms to A2 (nuclear growth) mechanism, and the activation energy of the reaction gradually decreases as the conversion rates increases. The main degradation of polyurethane resin is the decomposition of carbamate, ester group, amide and urea group by comparing the results of the data, and the products of the thermal decomposition are mainly small molecules of primary amine, carbon dioxide, enol, enolic acid and aldehydes.
期刊介绍：
One of the most important challenges facing the contemporary scientific world are problems connected with environmental protection. Intensive development of industry and agriculture has led to a rise in living standards on one hand, but an increase in environmental degradation on the other. This degradation poses a direct threat to human health and life. Solving these ever-increasing problems which seriously endanger our civilization require the united efforts of scientists and field researchers of many branches.
The "Polish Journal of Environmental Studies" publishes original papers and critical reviews on the following subjects:
-Basic and applied environmental pollution research, including environmental engineering
-Pollution control of atmospheric, water (marine and fresh), soil and biological materials
-Determination of harmful substances, including their metabolic breakdown patterns
-Analytical methods for metabolic breakdown patterns or other chemical degradation patterns in the environment and in biological samples
-Development of new analytical methods, instruments and techniques for controlling pollutants
-Circulation of pollutants in the environment and their effect on living organisms
-Environmentally oriented catalysis
-Hazards to human health and safety
-Waste utilization and management
-Land reclamation
-Conference reports, scientific and technical reports and book reviews
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